Printer&#39;s quad



June 24?., 1924.

G. W. CROWDER PRINTERS QUAD Filed July 24 1922 Patented June Z4, 1924,

GEORG-E W. GBOWDER, QF ST, LOUIS, MISSOURI.

'PRINTERS QUAD.

Application filed. July 24, 1922. Serial No. 577,045.

To all whom t may concern.'

Be it known that I, GEORGE W. GROWDER. a citizen of the United States, residing at the city of St. Louis, State of Missouri. have invented a certain new and useful lm` provement in Printers Qua-ds, of which the following is a specification, reference being had to the accompanying drawing, forming a part thereof.

This invention relates to a certain new and useful improvement in devices for printers use commonly known as quads.

The chief object of my present invention is to provide a readily and conveniently manipulated printers expansion quad which will eiiiciently facilitate and insure accurate and rigid mortise justifications, color regis trations, form lock-ups, and the like for effecting perfection in printing.

With the above and other objects in view, my present invention resides in the novel features of form, construction, arrangement, and combination of parts hereinafter described and afterwards pointed out in the claims.

In the accompanying drawing, Y

Figure 1 illustrates a use of an expansion quad embodying my invention, the figure or view showing a printers frame or chase, a mortised cut within the frame or chase, and the quad as justifying a printing line within the mortise of the cut:

Figure 2 is a plan view of the quad partly expanded;V

Figure 3 is a side elevational view of the quad partly expanded as in Figure 2:

Figure 4 is an inverted plan of the quad somewhat more expanded than in Figures 1 and 2;

Figure 5 is a longitudinal sectional view of the quad expanded as in Figure 4, taken as on line 5 5, Figure 2:

Figure 6 is a plan view of the quad in so-called normal or non-expanded condition; and

Figure 7 is an inverted plan of the quad Apartly expanded and as when justifying non-parallel lines or cuts.

Referring now more in detail and by reference characters to the accompanying drawing, which illustrates a practical embodiment of my invention, 1 indicates a socalled double wedge-block having opposite inclined or sloping side faces 2 2 and being of greater width and dimensions at its lower end than at its upper end.l Longitudinally throughout its length upon eachof its wedge faces 2, the block 1 is formed with a rounded, substantially semi-cylindrical shoulder 3, the wedge faces 2 being each divided by said shoulders 3 into oppositely inclining or beveled portions and the block`1 being consequently of greater width or thickness I centrally than at its sides, as best seen in Figure 4. At its upper- "reduced end or apex, theV block l is formed preferably intesion or neck 4.

Adapted for Co-Operation with and tting upon opposite block. 1, as best seen in Fig'- l ures 3 and 5, are approximately oblong rec'- tangular blocks 5 5 having flat outer workengaging faces 6 6 and each of which is partly cutaway or beveledupon its inner face and atits lower end and thereby formed with a wedge-face 7 adapted for sliding engagement with a wedge-face 2 of block 1. Each block 5 at its wedge-face 7 'is centrally longitudinally grooved, as at 8, for accommodating a shoulder 3 of middle blockl, each block 5 being longitudinallyformed 'upon grally with a threadedlongitudinal extenits inner face throughout the remainder of its length. above its wedge-face 'V7 with an approximately semi-cylindrical groove or recess, as at 9, for accommodating the screwextension or neck 4 of block 1.V

Threaded for adjustment upon neck 4, is a nut or so-called head 10 formed in its upper or exposed end with a slot or the like 11 for accommodating a suitable manipulating or operating tool, not shown.

ln use or operation and, for instance, in justifyinq` a printingdine 12 disposed in a mortise 13 in a printing-cut 14, a quad of my invention in normal or reduced nonexpanded size, seen in Figure 6, is placed in the mcrtise toV one side of the printing line and then, b v the use of the tool mentioned.` head 1li/is rotatorily actuated upon neck 4. In and by such operation and movement. middle block 1 will be drawn upwardly relatively to side blocksl 5, whereupon, through the co-operating engagement between its wedge-faces 2 with the wedgefaces 7 of the blocks 5, the blocks 5 will be laterally spread apart and the quad so expanded as to tightly lbind or wedge' the printing-line 12 in proper justified position in the mortise 13, the amount of expansion of the quad being limited by the length of the threaded neck 4 of block l. I may say that in actual size and practice the quad as a Whole,- -vineluding its expanding head l0, is three-fourths of an inch in height, equal to the height of a printers slug, and that the blocks l and 5-5 at their base have ,combined the dimensions of approximately onequarter square inch When the quad is in normal or non-expanded condition, the parts being so relatively proportioned as to permit of an eighth of an inch expansion equal to `nine printers points.

My quad is simple and inexpensive in form and construction, is easily and coni'e'nn ientl-y manipulated, and is exceedingly ehicient in the performance ofV its intended funcn tions. may add that by sfo diyiding; each Wedge-face 2 of bleek l into oppositely dis-- posed beveled portions, as described, one or the other or both of the side blocks 5 may, with a shoulder 3 as a' 'pivot orbeari11g,s\ying or tilt sideWise relatively to the middle bleek l to engage fiatwise upon the block l at its so beveled yyedge-fz'tcesV 2 inrigidly justify7H ing or registering angularly disposed print ing-matter, cuts, or the like, as illustrated in Figure 7.

am aware that changes in the form, Construction, arrangement and combination of the several parts of my new printers quad may be made and substituted for those herein shown and described Without departing;` from the nature and principle of myV invention'.

Haying thus described my invention, what I Claim and desire' to seeure by Letters Patent is: A y

1. A printers quad including, in combination, a longitudinally movable middle block having opposite Wedge faces and formed upon each Wedge face with a longitudinally disposed shoulder, a threaded ei:- tension fixed upon and movable longitudi naliy with the middle block, blocks disposed upon opposite sides of the middle block and having inner Wedge faces adapted for engagement with the Wedge faces of the mid dle blool, the side blocks being longitudinally grooved upon their said Wedge faces for Cooperation with said shoulders of the n'iiddle block, and a head threaded upon said extension for longitudinally moving the middle block for adjustably laterali;v es pending the side blocks.

A printers quad including. in combi-- nation', a `longitudinaliy movable middie block having' opposite `Wedge faces and formed upon each Wedge face with a longitudinally disposed shoulder, each said Wedge face Comprising oppositelj; dispos-,ed laterally beveled portion-s disposed upon opposite sides of said shoulder, a threaded in tegral extension upon the middle block. blocks disposed upon opposite sides of jthe middle block and having plane inner Wedge faces adapted for engagement with the Wedge faces of the middle block, the side blocks being longitudinally grooyed upon their said Wedge faces for sliding and tilting bearing` cti-:operation with said shoulders of the middle block, and a head threaded upon said extension for longitudinallyy mov ing the middle block for adjustably expanding the side blocks.

In testimony whereof, l have signed mi' naine to this specification.

GEORGE W. CROWDER. 

